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Robust single-sideband-modulated Raman light generation for atom interferometry by FBG-based optical rectangular filtration by Wang, Guochao; Wang, Yaning; Ying, Kang; Zhang, Huankai; Zhang, Xu; Li, Qixue; Li, Xuan; Wang, Enlong; Yu, Xiao; Jia, Aiai; Yan, Shuhua; Yang, Jun; Zhu, Lingxiao is a scholarly article available to read on EtoBox.

What is Robust single-sideband-modulated Raman light generation for atom interferometry by FBG-based optical rectangular filtration about?

Low-phase-noise and pure-spectrum Raman light is vital for high-precision atom interferometry by two-photon Raman transition. A preferred and prevalent solution for Raman light generation is electro-optic phase modulation. However, phase modulation inherently brings in double sidebands, resulting in residual sideband effects of multiple laser pairs beside Raman light in atom interferometry. Based on a well-designed rectangular fiber Bragg grating and an electro-optic modulator, optical single-sideband modulation has been realized at 1560 nm with a stable suppression ratio better than -25 dB despite of intense temperature variations. After optical filtration and frequency doubling, a robust phase-coherent Raman light at 780 nm is generated with a stable SNR of better than -19 dB and facilitates measuring the local gravity successfully. This proposed all-fiber single-sideband-modulated Raman light source, characterized as robust, compact and low-priced, is practical and potential for field applications of portable atom interferometry.

Author

Wang, Guochao; Wang, Yaning; Ying, Kang; Zhang, Huankai; Zhang, Xu; Li, Qixue; Li, Xuan; Wang, Enlong; Yu, Xiao; Jia, Aiai; Yan, Shuhua; Yang, Jun; Zhu, Lingxiao

Published

2022

Language

EN